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    <title>Overlay</title>
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        This example uses OpenLayers v<span>4.4.2</span>. The <a id="latest-link" href="#" class="alert-link">latest</a> is v<span id="latest-version"></span>.
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      <div class="row-fluid">
        <div class="span12">
          <h4 id="title">Overlay</h4>
          <div id="map" class="map"></div>
<div style="display: none;">
  <!-- Clickable label for Vienna -->
  <a class="overlay" id="vienna" target="_blank" href="http://en.wikipedia.org/wiki/Vienna">Vienna</a>
  <div id="marker" title="Marker"></div>
  <!-- Popup -->
  <div id="popup" title="Welcome to OpenLayers"></div>
</div>

        </div>
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      <div class="row-fluid">
        <div class="span12">
          <p id="shortdesc">Demonstrates overlays.</p>
          <div id="docs"><p>The popups are created using <a href="http://getbootstrap.com/javascript/#popovers">Popovers</a> from Bootstrap.</p>
</div>
          <div id="api-links">Related API documentation: <ul class="inline"><li><a href="../apidoc/ol.Map.html" title="API documentation for ol.Map">ol.Map</a></li>,<li><a href="../apidoc/ol.Overlay.html" title="API documentation for ol.Overlay">ol.Overlay</a></li>,<li><a href="../apidoc/ol.View.html" title="API documentation for ol.View">ol.View</a></li>,<li><a href="../apidoc/ol.coordinate.html" title="API documentation for ol.coordinate">ol.coordinate</a></li>,<li><a href="../apidoc/ol.layer.Tile.html" title="API documentation for ol.layer.Tile">ol.layer.Tile</a></li>,<li><a href="../apidoc/ol.proj.html" title="API documentation for ol.proj">ol.proj</a></li>,<li><a href="../apidoc/ol.source.OSM.html" title="API documentation for ol.source.OSM">ol.source.OSM</a></li></ul></div>
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          <a id="copy-button"><i class="fa fa-clipboard"></i> Copy</a>
          <a id="codepen-button"><i class="fa fa-codepen"></i> Edit</a>
        </div>
        <form method="POST" id="codepen-form" target="_blank" action="https://codepen.io/pen/define/">
          <textarea class="hidden" name="title">Overlay</textarea>
          <textarea class="hidden" name="description">Demonstrates overlays.</textarea>
          <textarea class="hidden" name="js">var layer &#x3D; new ol.layer.Tile({
  source: new ol.source.OSM()
});

var map &#x3D; new ol.Map({
  layers: [layer],
  target: &#x27;map&#x27;,
  view: new ol.View({
    center: [0, 0],
    zoom: 2
  })
});

var pos &#x3D; ol.proj.fromLonLat([16.3725, 48.208889]);

// Vienna marker
var marker &#x3D; new ol.Overlay({
  position: pos,
  positioning: &#x27;center-center&#x27;,
  element: document.getElementById(&#x27;marker&#x27;),
  stopEvent: false
});
map.addOverlay(marker);

// Vienna label
var vienna &#x3D; new ol.Overlay({
  position: pos,
  element: document.getElementById(&#x27;vienna&#x27;)
});
map.addOverlay(vienna);

// Popup showing the position the user clicked
var popup &#x3D; new ol.Overlay({
  element: document.getElementById(&#x27;popup&#x27;)
});
map.addOverlay(popup);

map.on(&#x27;click&#x27;, function(evt) {
  var element &#x3D; popup.getElement();
  var coordinate &#x3D; evt.coordinate;
  var hdms &#x3D; ol.coordinate.toStringHDMS(ol.proj.transform(
      coordinate, &#x27;EPSG:3857&#x27;, &#x27;EPSG:4326&#x27;));

  $(element).popover(&#x27;destroy&#x27;);
  popup.setPosition(coordinate);
  // the keys are quoted to prevent renaming in ADVANCED mode.
  $(element).popover({
    &#x27;placement&#x27;: &#x27;top&#x27;,
    &#x27;animation&#x27;: false,
    &#x27;html&#x27;: true,
    &#x27;content&#x27;: &#x27;&lt;p&gt;The location you clicked was:&lt;/p&gt;&lt;code&gt;&#x27; + hdms + &#x27;&lt;/code&gt;&#x27;
  });
  $(element).popover(&#x27;show&#x27;);
});
</textarea>
          <textarea class="hidden" name="css">#marker {
  width: 20px;
  height: 20px;
  border: 1px solid #088;
  border-radius: 10px;
  background-color: #0FF;
  opacity: 0.5;
}
#vienna {
  text-decoration: none;
  color: white;
  font-size: 11pt;
  font-weight: bold;
  text-shadow: black 0.1em 0.1em 0.2em;
}
.popover-content {
  min-width: 180px;
}
</textarea>
          <textarea class="hidden" name="html">&lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
&lt;div style&#x3D;&quot;display: none;&quot;&gt;
  &lt;!-- Clickable label for Vienna --&gt;
  &lt;a class&#x3D;&quot;overlay&quot; id&#x3D;&quot;vienna&quot; target&#x3D;&quot;_blank&quot; href&#x3D;&quot;http://en.wikipedia.org/wiki/Vienna&quot;&gt;Vienna&lt;/a&gt;
  &lt;div id&#x3D;&quot;marker&quot; title&#x3D;&quot;Marker&quot;&gt;&lt;/div&gt;
  &lt;!-- Popup --&gt;
  &lt;div id&#x3D;&quot;popup&quot; title&#x3D;&quot;Welcome to OpenLayers&quot;&gt;&lt;/div&gt;
&lt;/div&gt;
</textarea>
          <input type="hidden" name="resources" value="https://openlayers.org/en/v4.4.2/css/ol.css,https://openlayers.org/en/v4.4.2/build/ol.js,https://code.jquery.com/jquery-2.2.3.min.js,https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css,https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js">
          <input type="hidden" name="data">
        </form>
        <pre><code id="example-source" class="language-markup">&lt;!DOCTYPE html&gt;
&lt;html&gt;
  &lt;head&gt;
    &lt;title&gt;Overlay&lt;/title&gt;
    &lt;link rel="stylesheet" href="https://openlayers.org/en/v4.4.2/css/ol.css" type="text/css"&gt;
    &lt;!-- The line below is only needed for old environments like Internet Explorer and Android 4.x --&gt;
    &lt;script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"&gt;&lt;/script&gt;
    &lt;script src="https://openlayers.org/en/v4.4.2/build/ol.js"&gt;&lt;/script&gt;
    &lt;script src&#x3D;&quot;https://code.jquery.com/jquery-2.2.3.min.js&quot;&gt;&lt;/script&gt;
    &lt;link rel&#x3D;&quot;stylesheet&quot; href&#x3D;&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css&quot;&gt;
    &lt;script src&#x3D;&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;
    &lt;style&gt;
      #marker {
        width: 20px;
        height: 20px;
        border: 1px solid #088;
        border-radius: 10px;
        background-color: #0FF;
        opacity: 0.5;
      }
      #vienna {
        text-decoration: none;
        color: white;
        font-size: 11pt;
        font-weight: bold;
        text-shadow: black 0.1em 0.1em 0.2em;
      }
      .popover-content {
        min-width: 180px;
      }
    &lt;/style&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
    &lt;div style&#x3D;&quot;display: none;&quot;&gt;
      &lt;!-- Clickable label for Vienna --&gt;
      &lt;a class&#x3D;&quot;overlay&quot; id&#x3D;&quot;vienna&quot; target&#x3D;&quot;_blank&quot; href&#x3D;&quot;http://en.wikipedia.org/wiki/Vienna&quot;&gt;Vienna&lt;/a&gt;
      &lt;div id&#x3D;&quot;marker&quot; title&#x3D;&quot;Marker&quot;&gt;&lt;/div&gt;
      &lt;!-- Popup --&gt;
      &lt;div id&#x3D;&quot;popup&quot; title&#x3D;&quot;Welcome to OpenLayers&quot;&gt;&lt;/div&gt;
    &lt;/div&gt;
    &lt;script&gt;
      var layer &#x3D; new ol.layer.Tile({
        source: new ol.source.OSM()
      });

      var map &#x3D; new ol.Map({
        layers: [layer],
        target: &#x27;map&#x27;,
        view: new ol.View({
          center: [0, 0],
          zoom: 2
        })
      });

      var pos &#x3D; ol.proj.fromLonLat([16.3725, 48.208889]);

      // Vienna marker
      var marker &#x3D; new ol.Overlay({
        position: pos,
        positioning: &#x27;center-center&#x27;,
        element: document.getElementById(&#x27;marker&#x27;),
        stopEvent: false
      });
      map.addOverlay(marker);

      // Vienna label
      var vienna &#x3D; new ol.Overlay({
        position: pos,
        element: document.getElementById(&#x27;vienna&#x27;)
      });
      map.addOverlay(vienna);

      // Popup showing the position the user clicked
      var popup &#x3D; new ol.Overlay({
        element: document.getElementById(&#x27;popup&#x27;)
      });
      map.addOverlay(popup);

      map.on(&#x27;click&#x27;, function(evt) {
        var element &#x3D; popup.getElement();
        var coordinate &#x3D; evt.coordinate;
        var hdms &#x3D; ol.coordinate.toStringHDMS(ol.proj.transform(
            coordinate, &#x27;EPSG:3857&#x27;, &#x27;EPSG:4326&#x27;));

        $(element).popover(&#x27;destroy&#x27;);
        popup.setPosition(coordinate);
        // the keys are quoted to prevent renaming in ADVANCED mode.
        $(element).popover({
          &#x27;placement&#x27;: &#x27;top&#x27;,
          &#x27;animation&#x27;: false,
          &#x27;html&#x27;: true,
          &#x27;content&#x27;: &#x27;&lt;p&gt;The location you clicked was:&lt;/p&gt;&lt;code&gt;&#x27; + hdms + &#x27;&lt;/code&gt;&#x27;
        });
        $(element).popover(&#x27;show&#x27;);
      });
    &lt;/script&gt;
  &lt;/body&gt;
&lt;/html&gt;</code></pre>
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